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#!/bin/sh
help() {
echo "git-mirror"
echo ""
echo "A tool for mirroring a remote git repository to another one."
echo ""
echo "Usage:"
echo " git-mirror setup [path] [primary] [mirror]"
echo " Sets up a new folder for mirroring a remote git repository."
echo " path - The path where the primary repository should be cloned. Must not exist."
echo " primary - git URL for the primary git repository (the one to be mirrored)."
echo " mirror - git URL for the repository to be mirrored to. Must already exist and be writable from the host."
echo ""
echo " git-mirror update [path]"
echo " Updates the mirror repository with the primary. Only works if the given directory was set up with this tool."
echo " path - The directory which was set up using the setup command."
}
check_git() {
command -v git >/dev/null 2>&1 || {
echo >&2 "Could not find git. Please make sure it is installed and included in your path."
exit 1
}
}
setup() {
path=$1
primary=$2
mirror=$3
[ -z "$path" ] && echo >&2 "No path given." && exit 1
[ -z "$primary" ] && echo >&2 "No primary repository given." && exit 1
[ -z "$mirror" ] && echo >&2 "No mirror repository given." && exit 1
[ -d "$path" ] && echo >&2 "The given path (${path}) already exists." && exit 1
check_git
mkdir -p $path
echo "Cloning primary ..."
git clone --mirror $primary $path
echo ""
echo "Adding mirror remote ..."
$(cd $path && git remote add --mirror=fetch mirror $mirror) || exit $?
echo ""
echo "Mirror directory set up."
echo ""
echo "Running update ..."
echo ""
update $1
}
update() {
path=$1
[ -z "$path" ] && echo >&2 "No path given." && exit 1
[ ! -d "$path" ] && echo >&2 "The given path (${path}) does not exist." && exit 1
check_git
echo "Fetching primary ..."
$(cd $path && git fetch origin) || exit $?
echo ""
echo "Pushing to mirror ..."
$(cd $path && git push mirror --all --follow-tags --force) || exit $?
echo ""
echo "Mirror up to date."
}
case "$1" in
("setup")
setup $2 $3 $4
;;
("update")
update $2
;;
("help")
help
;;
*)
help
exit 1
;;
esac